Lubricating mechanism.



No. 865,083. PATENTED SEPT. a, 1907. N. A. CHRISTENSEN. LUBRIGATING MECHANISM.

APPLICATION FILED APB. 11.1901.

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NIELS ANTON CHRISTENSEN, OF MILWAUKEE, WISCONSIN.

LUBBIGATING MECHANISM.

Specification of Letters Patent.

Patented Sept. 3, 1907.

Application filed April 11,1901. Serial No. 55,388-

To all whom it may concern:

Be it known that I, NIE'Ls ANTON Gnnrs'rnnsnn, a subject of the King of Denmark, and a resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain 'new'and useful Improvements in Lubricating Mechanism, of which the following is a specification.

My invention relates to electric machines generally but more particularly to the lubricating mechanism for the armature shaft, and the object thereof is to improve, simplify and rendermore efficient mechanisms of said character, as will be fully apparent from the-description hereinafter given.

The single figure of the drawing is a longitudinal section of an electric machine, dynamo or motor, embodying my invention. 4 l

The drawings illustrate the embodiment of my invention in one form of electric machine, but it is obvious that it is not limited to any particular or special features of construction not directly concerned therewith.

The electric machine herein shown comprises, in general, the frame 1, poles 2, armature 3, armature shaft 4, pulley 5 and the end plates indicated as a whole by the reference character 6. Each end plate is provided with the inward extension 7 projecting towards the armature and with the outward extension 8 forming the oil box proper. Referring to the figure of the drawing, the brush holder yoke 11 is here shown as mounted on the left hand extension 7 and is received by the groove 9.

' My herein described invention relates to the oiling mechanism for the armature shaft and its object is to overcome certain practical objections in the running of electric machines, particularly the too abundant oiling of the bearings adjacentto the armature and its consequent passing to the armature with injurious results.

According to my invention, the oil is fed to the armature shaft at a point as far as practicable away from the armature by the construction and arrangement herein shown whereby said objections are overcome or minimized. The oiling mechanisms at each end of the machine are similar in construction and operation and consequently the descriptionof one will applyto both.

The bracket, as shown, comprises the flat annular plate portion 17 and the oil box 8 into which the armsture shaft 4 extends. The oil box contains a center bearing 18 which is off set outwardly from the plate portion so that the oiling ring, hereinafter described, is brought as far a possible from the armature, and also permit the oil supply hole and door 19 to be conveniently arranged as shown. The center bearing 18, has secured to it a bearing sleeve 20, forming the bearing proper for the armature shaft. This sleeve is properly slotted to permit a ring 21 to rest upon the shaft while the lower end dips into the oil well 22. The oiling device is thus outside or beyond the center bearing and comparatively far removed from the armature. The

oil is fed by the ring upon the armature shaft and lubricatos the hearing. Whatever oil may pass along the shaft beyond the bearing sleeve is most liable to drop into the space 23, finding its way back to the oil well 22. The construction and arrangement of the lubricating device herein shown is both simple and efficient and overcomes the objections hereinbeforo noted.

Obviously my invention is not limited to the structural details herein shown (unless expressly called for by some of the claims) inasmuch as various mechanical changes might be made without dcparting'from the spirit of my invention.

I claim:

In an electrlc machine, an armature shaft benrlng comprlslng a removable end plate 17 secured to tlic frame of the muchlne and lmvlmr a central casing 7, 8, projecting laterally on both sides to receive and contain oil, said casing hnvlng a support 18 arranged outwardly beyond the plane of the plate and provlded with n transverse opening" for the passage of the oil from one end of the casing to the other, if bushing 20 mounted wllhln suld support and provided with a slot at a point outwardly from the latter, and arlug arranged in said slot and depending into the lower end of the casing.

' NIELS ANTON CHRISTENSEN. Witnesses '2 H. W. RAMINN, Jor-m DADMUN. 

